文献类型：期刊文献

英文题名：Vertically oriented Ni3S2/RGO/Ni3S2 nanosheets on Ni foam for superior supercapacitors

作者：Zhao, Chongjun[1];Zhang, Zhuomin[1];Wang, Qian[1];Min, Shudi[1];Qian, Xiuzhen[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China

年份：2015

卷号：5

期号：78

起止页码：63528

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20153101096427);WOS:【SCI-EXPANDED(收录号:WOS:000358734800046)】；

基金：We are grateful for the support of the National Natural Science Foundation of China (No. 20504026), the Shanghai Natural Science Foundation (No. 13ZR1411900), the Shanghai Leading Academic Discipline Project (B502), the Shanghai Key Laboratory Project (08DZ2230500), and the EU FP7 Staff Exchange program (No. PIRSES-GA-2012-318990-ELEKTRONANOMAT).

语种：英文

外文关键词：Capacitance - Supercapacitor - Nanosheets - Nickel

摘要：A unique sandwich structure of Ni3S2/RGO/Ni3S2 consisting of Ni3S2 nanosheets was designed and constructed on nickel foam (NF) by a one-step hydrothermal process. The lower Ni3S2 layer was converted in situ from the Ni foam substrate, while the upper Ni3S2 layer with vertical nanosheets resulted from Ni2+ ions in the solution. This Ni3S2/RGO/Ni3S2/NF nanocomposite was directly utilized as a supercapacitor electrode, which possessed a high areal mass loading of 5.2 mg cm(-2), and superior performance: a specific capacitance of up to 16.82 F cm(-2) (i.e., 3234.62 F g(-1)) at a current density of 20 mA cm(-2) (3.85 A g(-1)) and 90% retention of the initial capacitance after 1000 cycles at the high rate of 100 mA cm(-2) (19.23 A g(-1)).